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035-14510-001 Rev. A (0602)
C
ongratulations . . .
On your purchase of one of the most versatile air conditioning systems available in the industry today. This Stealth series high
efficiency system has been precision designed, manufactured of high quality materials and has passed many vigorous inspections and tests to ensure years of satisfactory service.
This booklet is meant to increase your understanding of your system, tell you how to operate it efficiently and how to obtain
the greatest measure of comfort at the lowest operating expense. Please read this booklet thoroughly.
We appreciate your interest in our product and your decision to purchase our system. Enjoy your comfort.
THERMOSTATS
YOUR KEY TO COMFORT
Though thermostats may vary widely in
appearance they are all designed to
perform the same basic function, to
control the operation of your air conditioning system. Regardless of size or
shape, each thermostat will feature a
temperature indicator; a dial, arm or
push button for selection of the desired
temperature; a fan switch to choose
the indoor fan operation; and a comfort
switch for you to select the system
mode of operation.
Your new Stealth unit will require a
two-stage thermostat for optimum efficiency and energy savings. York has
tested and certified the Honeywell®
T8624D as the best model for your
new comfort system. Please be aware
that many different thermostats operate on batteries or “power stealing”
principals. York can not support such
models to be trouble free when used
with the Stealth series units.
The following illustrations and discussion will aid you to determine which
type of thermostat you have for your
system.
A complete operating instruction is provided by the manufacturer for each
thermostat. Familiarize yourself with its
proper operation to obtain the maxium
comfort with a minimum of energy consumption.
NOTE: If you have an independent
heating system (with a separate thermostat), always be sure the heating
control is turned “Off” before turning on
the cooling system.
COOLING AND HEATING
If your system has been designed to
allow both cooling and heating operation, you may have either a manual
changeover type, or a programmable
electronic type thermostat with 2stages of cooling and 2-stages of heat.
MANUAL CHANGEOVER
Manual changeover simply means that
the comfort switch must be manually
positioned every time you wish to
switch from the cooling to heating or
heating to cooling modes of operation.
PROGRAMMABLE
ELECTRONIC
THERMOSTATS
The computerized electronic thermostat is actually a sophisticated electronic version of a manual changeover
type. This thermostat includes features which allow “set-back” temperature variations for periods of sleep, or
while you are away during the day, and
means energy savings for you. The
thermostat also features a digital clock.
COOLING ONLY
If your air conditioning system is
designed to provide only cooling, with
no capability for heating operation, a
two-stage cooling only thermostat, with
a manual, two-position “Cool” and “Off”
comfort switch is all that is required for
system operation.
2
FAN OPERATION SELECTION
A multi-position fan switch allows you
to choose the type of fan operation of
the indoor fan.
AUTO
With the thermostat fan switch set to
“AUTO”, the fan will run intermittently
as required for either heating or cooling. This position will provide the lowest operating cost. If you purchased
one of the York thermostats, they have
an intelligent fan mode which continually circulates the air during occupied
modes or when you are at home and
can cycle the fan during unoccupied
mode or during the night while you
sleep to further conserve energy.
ON
CONTINUOUS FAN OPERATION:
With the thermostat fan switch set to
“ON”, the indoor fan will not shut off.
However, the cooling and heating systems will still operate as required by
room temperatures. This provides continuous air filtering and more even temperature distribution to all conditioned
spaces.
FAN ONLY OPERATION: On moderate days, usually during spring and fall,
when neither heating nor cooling is
required, you may want to run only the
fan to ventilate, circulate and filter the
air in your home or building. Set the
comfort control switch to “OFF” and the
fan switch to “ON”. Be sure to return
the switches to their original positions
for normal operation.
FIGURE 1:Programmable Electronic
Thermostat
Unitary Products Group